[3] At around 8:06 am, Jackson arrived at Källeberg, at the school's football pitch, carrying a gym bag that contained four knives, two airsoft pistols, black clothing, a protective vest and combat helmet both adorned with patches of the Swedish flag.

[5][1] Upon starting the livestream, Jackson begins playing Serbia Strong and says "Remember lads, Subscribe to PewDiePie", referencing a quote originating from the perpetrator of the Christchurch mosque shootings.

[6] Fifteen minutes and forty-eight seconds into the livestream, the music has changed to "Don't Stop Me Now" by Queen, and Jackson begins walking back to the football pitch before being detained by police officer, Mikael Johansson, who orders him to lie down.

[7]: 6  Johansson fires warning shots at Jackson, the weapon is dropped, he put into handcuffs and arrested whilst music continues playing.

[1] On 6 August 2021, Swedish authorities received a tip from the FBI entailing that an individual had made plans to commit a school shooting in Sweden, which was traced to the perpetrator.

[9] While he was imprisoned, he had some level of media access, and was reported to celebrate school shootings and similar attacks as they were actively happening across the world.

They had met on the online video game Roblox and had been friends for around six years, communicating through various social media platforms and meeting in person four or five times.

[11] On 22 December 2021, the Lund District Court sentenced Hugo to two and a half years in a youth detention center after being found guilty of attempted murder and nine counts of grossly unlawful threats.